Impressive feature of #Samsung #OneUI 4 (based on Android 12):#BackupCalling=#WiFiCalling (#VoWiFi)+#AutoDataSwitchingAuto Data Switching:Switch to another SIM for mobile data if the preferred SIM can't connect. If Wi-Fi Calling is on, SIMs will also...
Like competitor apps Paytm, FreeCharge, PhonePe, Google Pay, etc Samsung also must introduce lock / secured (PIN, Password, Finger print, etc) access to it's app.
There are many such use cases when you want block / stop a particular number to call / sms you on your specific SIM number. So, not only samsung, but all UI makers must introduce option to select SIMs under blocked number service.